Flu id-pressure elevator



y(No Model.) 4

W. V. BUTTERFIELD. FLUID PRESSURE ,ELEVATOIL No. 596,736, Patented Jan. 4, 1898.

j@ Mmmm WWW/2W "a IM NITED STATES PATENT OFFICE.

IVALTER V. BUTTERFIELD, OF FREEPORT, ILLINOIS, ASSIGNOR OF ONE- IIALF TO JAMES G. BUTTERFIELD, OF SIOUX CITY, IOWA.

FLUID-PRESSURE ELEVATOR.

SPECIFICATION forming part of Letters Patent No. 596,736, dated January 4, 1898.

Application filed December 28, 1896. Serial No. 617,140. (No model.)

' To @ZZ whom, t 77u13/ concern:

Be it known that I, WALTER V. BUTTER- FIELD, a citizen of the United States, residing at Freeport, in the county of Stephenson and State of Illinois, have invented certain new and useful Improvements in Fluid-Pressure Elevators, of which the following is a specification.

The object of my invention is to provide a simple, economical, and efficient elevator adapted to elevate and discharge granulated materials by the use of Huid-pressure; and the invention consists in the features, combinations, and details of construction hereinafter described and claimed.

In the accompanying drawings, Figure lis a front elevation of a complete apparatus embodying my improvements; Fig. 2, an enlarged sectional elevat-ion of the lower portion j of the leg7 or injecting-cage; and Figs. 3 and 1, enlarged cross-sectional views taken on lines 3 and 4, respectively, of Fig. 2.

My invention is intended primarily for the purpose of elevating the ashes out of the ashpits that are located betweenthe rails of a railroad to receive ashes as they are dumped from alocomotive, and has particularly to do with the lifting of materials which are composed of granulated substances varying in size and specific gravity. It is well known to-day that the ashes are removed from the ash-pits of railroads entirely by hand labor, owing to the fact that no economical mechanical means has yet been discovered, which is necessarily expensive and consumes considerable time.

In constructing an apparatus in accordance with my improvements I make what I terni a delivery-pipe A and provide the lower end thereof with a leg portion B, that contains an injector b. This injector is provided with a supply-pipe C, that may be led to any source of fluid-pressure supply. In the drawings I have shown it connected with the steamdome d ofa locomotive D for the purpose of using a supply of steam under pressure. I prefer in most instances, especially using the elevator for ashes and cinders, to use steam, for the reason that it not only supplies pressure, but furnishes a certain amount of moisture that dampens the ashes and prevents their permeating the surrounding atmosphere and also in a measure packs the material together to facilitateits passage through the delivery-pipe.

In the drawings I have shown the mechanism as mounted upon a platform-car E and the educt-opening a as arranged over a gondola car G. Further, while I have shown the supply-pipe as connected with the steamdome of a locomotive, it will be understood that I may connect it, if desired, with a source of compressed air. Y

In constructing the leg portion B, I make it preferably of a main portion B', having a bell-shaped lower portion b', in which there is preferably arranged a series of lateral openings 122. This bell-shaped lower portion is provided with an inlet pipe or bushing b3, that extends upward into the main portion of the leg to a point about as high as the top of the opening b2. This inlet-pipe is mounted in a cage B2, that is screw-threaded into the bellshaped portion, the lower portion of which carries the injector b, that is connected with the source of Huid-supply. This cage is preferably made so as to have lateral openings b4 between the injector and the inletopening of the main portion, so that when the machine is in operation a certain amount of material may be forced direct by iiuidpressure through .the inlet-opening into the main portion. After entering the main portion it creates a partial vacuum and more material, especially of the finer kind, is drawn in through the lateral openings b2, thereby facilitating the elevating of materials of different speciflc gravity and of different sizes.

I claimj 1. In a fluid-pressure elevator, the combinationof a delivery-pipe, a leg portion B secured to the inlet part of such pipe and provided with an enlarged portion b at the lower end thereof and having a lateral opening b2 on such lower portion, an inlet-pipe b3 arranged in the axial opening of the leg portion and extending inwardly in such leg portion, an injector b secured to the cage portion B2 lin line with the inlet-pipe, and aportion interposed between the inlet-pipe and the injector to provide a space between such parts, substantially as described.

IOO

2. In a fluid-pressure elevator, the conrbination of a delivery-pipe, a leg portion. B arranged on the inlet part of such pipe and provided with a set of lateral openings b2 at the lower end thereof, a Gage portion B2 secured to the leg portion at its axial opening and providing a second set of lateral openings b4, l an inlet pipe or bushing b3 in the upper part of the cage extending into the leg portion,

andan injector binthe lower part of the cage 1o portion in line with thei'nlet-pipeand adapted to be connected with a source of fluidpressure, substantially as described.

WALTER- V. BUTTERFIELD.

Witnesses:

THOMAS B. MCGREGOR', THOMAS F. SHERIDAN. 

